| Penalties | Players | VS Club | Date | |
|---|---|---|---|---|
| 3 | Billy Twelvetrees | Newcastle Falcons | 20-04-2018 | Match details |
| 3 | Billy Twelvetrees | Cardiff Blues | 11-05-2018 | Match details |
| 2 | Owen Williams | Connacht | 31-03-2018 | Match details |
| 1 | Owen Williams | Agen | 12-01-2018 | Match details |
| 1 | Billy Twelvetrees | Pau | 19-01-2018 | Match details |
| 1 | Billy Twelvetrees | Connacht | 31-03-2018 | Match details |
